SSC CGL 2021 PYQ — Question 67

The correct answer is option 4 i.e. 4.6

The sides of the triangle are 5, 12 and 13.

Area of triangle = $\sqrt{s(s-a)(s-b)(s-c)}$ , where s = 15

= $\sqrt{15(15-5)(15-12)(15-13)}$

= 5 × 3 × 2

= 30 cm².

As one knows the base and their corresponding height is inversely proportional.

⇒ 30 = 1/2 × 13 × h

⇒ h = 4.6.